A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Libssh
  • Libssh

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References
Link Providers
https://gitlab.com/libssh/libssh-mirror/-/commit/855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60 cve-icon cve-icon
https://vuldb.com/?ctiid.349709 cve-icon cve-icon
https://vuldb.com/?id.349709 cve-icon cve-icon
https://vuldb.com/?submit.767120 cve-icon cve-icon
https://www.libssh.org/files/0.12/libssh-0.12.0.tar.xz cve-icon cve-icon
https://www.libssh.org/security/advisories/libssh-2026-sftp-extensions.txt cve-icon cve-icon
History

Sun, 08 Mar 2026 10:45:00 +0000

Type Values Removed Values Added
Description A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.
Title libssh SFTP Extension Name sftp.c sftp_extensions_get_data out-of-bounds
First Time appeared Libssh
Libssh libssh
Weaknesses CWE-119
CWE-125
CPEs cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*
Vendors & Products Libssh
Libssh libssh
References
Metrics cvssV2_0

{'score': 5, 'vector': 'AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:OF/RC:C'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-03-08T10:32:19.482Z

Updated: 2026-03-08T10:32:19.482Z

Reserved: 2026-03-07T17:52:02.964Z

Link: CVE-2026-3731

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-08T11:15:50.307

Modified: 2026-03-08T11:15:50.307

Link: CVE-2026-3731

cve-icon Redhat

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